Tai Tam Harbour (Chinese: 大潭港) is a harbour in the innermost part of Tai Tam Bay in Hong Kong. It is located at the estuary of Tai Tam Tuk. The resited village of Tai Tam Tuk is located at the estuary by the harbour, after construction of Tai Tam Tuk Reservoir. The harbour was once a gathering water of Tanka people.
Part of the estuary is fully of mangrove.
Coordinates: 22°14′13″N 114°13′52″E / 22.23699°N 114.23120°E